<?php

namespace app\admin\controller\general;

use app\common\controller\Backend;
use app\admin\model\Admin;
use think\Db;
/**
 * 科目管理
 *
 * @icon fa fa-circle-o
 */
class Subject extends Backend
{

    /**
     * Subject模型对象
     * @var \app\admin\model\Subject
     */
    protected $model = null;

    public function _initialize()
    {
        parent::_initialize();
        $this->model = new \app\admin\model\Subject;
        $this->view->assign("type_arr", $this->model->type_arr);
    }



    /**
     * 默认生成的控制器所继承的父类中有index/add/edit/del/multi五个基础方法、destroy/restore/recyclebin三个回收站方法
     * 因此在当前控制器中可不用编写增删改查的代码,除非需要自己控制这部分逻辑
     * 需要将application/admin/library/traits/Backend.php中对应的方法复制到当前控制器,然后进行修改
     */


    /**
     * 查看
     */
    public function index()
    {
        //当前是否为关联查询
        $this->relationSearch = false;
        //设置过滤方法
        $this->request->filter(['strip_tags', 'trim']);
        if ($this->request->isAjax()) {
            //如果发送的来源是Selectpage，则转发到Selectpage
            if ($this->request->request('keyField')) {
                return $this->selectpage();
            }
            list($where, $sort, $order, $offset, $limit) = $this->buildparams();

            $list = $this->model
                    
                    ->where($where)
                    ->order($sort, $order)
                    ->paginate($limit);

            foreach ($list as $row) {
                $row->visible(['id','name','create_time','type']);
                
            }

            $result = array("total" => $list->total(), "rows" => $list->items());

            return json($result);
        }
        return $this->view->fetch();
    }

    /**
     * 添加
     */
    public function add()
    {
        if ($this->request->isPost()) {
            $params = $this->request->post("row/a");
            if ($params) {
                $params = $this->preExcludeFields($params);
                $result = false;
                Db::startTrans();
                try {
                    $subject_info = $this->model->get(['name'=>$params['name']]);
                    if(!empty($subject_info))exception('该科目已被添加');
                    $validate = $this->validate($params, 'Subject.add');
                    if($validate !== true)exception($validate);
                    $result = $this->model->allowField(true)->save($params);
                    Db::commit();
                }  catch (\Exception $e) {
                    Db::rollback();
                    $this->error($e->getMessage());
                }
                if ($result !== false) {
                    $this->success();
                } else {
                    $this->error(__('No rows were inserted'));
                }
            }
            $this->error(__('Parameter %s can not be empty', ''));
        }
        return $this->view->fetch();
    }

    /**
     * 编辑
     */
    public function edit($ids = null)
    {
        $row = $this->model->get($ids);
        if (!$row) {
            $this->error(__('No Results were found'));
        }

        if ($this->request->isPost()) {
            $params = $this->request->post("row/a");
            if ($params) {
                $params = $this->preExcludeFields($params);
                Db::startTrans();
                try {
                    if($row->type != $params['type']){
                        Db::table('b_admin_timetable_item')->where('subject_id',$ids)->update([
                            'type' => $params['type']
                        ]);
                    }
                    $subject_info = $this->model->get(['name'=>$params['name'],'id'=>['<>',$row->id]]);
                    if(!empty($subject_info))exception('该科目已被添加');
                    $validate = $this->validate($params, 'Subject.edit');
                    if($validate !== true)exception($validate);
                    $result = $row->allowField(true)->save($params);

                    if(!$result)exception('编辑失败');
                    Db::commit();
                } catch (\Exception $e) {
                    Db::rollback();
                    $this->error($e->getMessage());
                }
                $this->success();
            }
            $this->error(__('Parameter %s can not be empty', ''));
        }
        $this->view->assign("row", $row);
        return $this->view->fetch();
    }

    /**
     * 删除
     */
    public function del($ids = "")
    {
        if (!$this->request->isPost()) {
            $this->error(__("Invalid parameters"));
        }
        $ids = $ids ? $ids : $this->request->post("ids");
        if ($ids) {
            try {
                $count = Db::table('b_admin_timetable_item')->where('subject_id',$ids)
                    ->count();
                if($count > 0)exception('该科目已被使用不能删除');
                $res = $this->model->where('id',$ids )->delete();
                if(!$res)exception('删除失败');
            } catch (\Exception $e) {
                $this->error($e->getMessage());
            }
            $this->success();
        }
        $this->error(__('Parameter %s can not be empty', 'ids'));
    }

}
